76 to 100 of 117 LangChain Jobs in London

Lead GenAI Engineer | GenAI | FinTech | Hybrid London | Up to £140k

Hiring Organisation
Maze
Location
London Area, United Kingdom
engineers). Strong hands-on experience shipping real GenAI/LLM systems into production. Deep expertise in: LLMs & transformer-based models Agentic frameworks (e.g., LangChain, LangGraph) Retrieval-Augmented Generation (RAG) Python Building or integrating LLMs into products or workflows Working with GenAI frameworks and tooling Designing or optimising prompt pipelines ...

Lead GenAI Engineer | GenAI | FinTech | Hybrid London | Up to £140k

Hiring Organisation
Maze
Location
City of London, London, United Kingdom
engineers). Strong hands-on experience shipping real GenAI/LLM systems into production. Deep expertise in: LLMs & transformer-based models Agentic frameworks (e.g., LangChain, LangGraph) Retrieval-Augmented Generation (RAG) Python Building or integrating LLMs into products or workflows Working with GenAI frameworks and tooling Designing or optimising prompt pipelines ...

Java Full Stack Engineer (DV Cleared)

Hiring Organisation
83zero Limited
Location
London, United Kingdom
Employment Type
Permanent
Salary
£55,000
databases (e.g., Postgres) Apache NiFi Web standards, accessibility and development best practice Bonus Experience Microservices in C#/.NET Integrating LLMs with tools like LangChain or Vercel AI Additional Information You must be fully flexible for client assignments, which may involve short-notice travel You must have the right ...

Founding AI Engineer London - £180K plus equity

Hiring Organisation
Halian Technology Limited
Location
London, United Kingdom
Employment Type
Permanent
decisions that shape the companys trajectory Tech youll work with Python, LLMs, vector databases, knowledge graphs React/TypeScript, Supabase, AWS Agent frameworks (e.g., LangChain, LangGraph) What they are looking for Ownership mindset: You think like a founder and execute without waiting for instructions High energy: Positive attitude and genuine ...

MOD SC GenAI / Agentic Technical Lead CGEMJP00325229 (Corsham)

Hiring Organisation
Experis
Location
London, England, United Kingdom
embedded within a mature AI Factory. Deep technical understanding of GenAI tools, such as GPT models, and Agentic AI frameworks, such as Langgraph & Langchain, required. Strong full stack/software engineering skills also preferable. To provide technical leadership for a team of ~15 technical developers across data science, software engineering ...

Agentic AI Technical Lead

Hiring Organisation
Computer Futures
Location
City of London, London, United Kingdom
Employment Type
Contract
Contract Rate
£550/day
embedded within a mature AI Factory. Deep technical understanding of GenAI tools, such as GPT models, and Agentic AI frameworks, such as Langgraph & Langchain, required. Strong full stack/software engineering skills also preferable. To provide technical leadership for a team of ~15 Capgemini Invent technical developers across data science ...

Software Engineer (Backend, AI Systems)

Hiring Organisation
Locai Labs
Location
London Area, United Kingdom
data modelling Experience with containerisation (Docker) and cloud platforms ( GCP , AWS , or similar) Familiarity with LLM or AI APIs Exposure to agentic frameworks (LangChain, LlamaIndex, Semantic Kernel, etc.) Practical experience with databases (SQL/NoSQL) Strong foundation in software design principles and systems thinking Comfortable working in a fast-paced ...

Software Engineer (Backend, AI Systems)

Hiring Organisation
Locai Labs
Location
City of London, London, United Kingdom
data modelling Experience with containerisation (Docker) and cloud platforms ( GCP , AWS , or similar) Familiarity with LLM or AI APIs Exposure to agentic frameworks (LangChain, LlamaIndex, Semantic Kernel, etc.) Practical experience with databases (SQL/NoSQL) Strong foundation in software design principles and systems thinking Comfortable working in a fast-paced ...

Fractional Head of AI - Recruitment Sector

Hiring Organisation
Head of AI
Location
London, UK
Employment Type
Full-time
agentic and generative AI capabilities. Deep Technical Fluency: Fluent in modern AI ecosystems including generative AI, agentic systems, AI copilots, and orchestration frameworks (e.g. LangChain, AutoGen, CrewAI). Understands how to combine traditional ML and analytics with emerging AI architectures to deliver measurable commercial value. Evolved beyond a purely data ...

Fractional Head of AI - Property/Facilities

Hiring Organisation
Head of AI
Location
South London, UK
Employment Type
Full-time
agentic and generative AI capabilities. Deep Technical Fluency: Fluent in modern AI ecosystems including generative AI, agentic systems, AI copilots, and orchestration frameworks (e.g. LangChain, AutoGen, CrewAI). Understands how to combine traditional ML and analytics with emerging AI architectures to deliver measurable commercial value. Evolved beyond a purely data ...

AI Prompt Engineer

Hiring Organisation
Staffworx Limited
Location
East London, London, United Kingdom
Employment Type
Contract
Contract Rate
market rates, outside IR35, remote first, UK but 1-2 days on site
KNative and managed inference endpoints. Optimize model performance with quantization, distillation, caching, batching and routing strategies. Youll Bring Strong Python skills, with experience usingTransformers,LangChain,LlamaIndex and the broader GenAI ecosystem. Deep understanding of LLM behavior, prompt optimization, embeddings, retrieval and data preparation workflows. Experience with vector DBs (FAISS, Pinecone … tuning open-source LLMs. Tech Stack LLMs: GPT-4/5, Claude 3.x, Gemini 2.x, Mistral Large, LLaMA 3, Cohere Command R+, DeepSeek Frameworks: LangChain, LlamaIndex, Haystack, AutoGen, CrewAI Tools: GitHub Copilot, Cursor, LangSmith, LangFuse, Weights & Biases, MLflow, Humanloop Cloud: Azure ML, AWS SageMaker, Google Vertex AI, Databricks, Modal Infra ...

Data Scientist

Hiring Organisation
Nicoll Curtin
Location
London Area, United Kingdom
strategy. Responsibilities: Develop data pipelines using Python, Pandas, and SQL Build and deploy machine learning models with PyTorch Create LLM and workflow integrations using LangChain Consolidate and prepare datasets for analysis and modelling Provide clear, actionable insights to technical and non-technical stakeholders Must of worked within a Banking, Financial ...

Data Scientist

Hiring Organisation
Nicoll Curtin
Location
City of London, London, United Kingdom
strategy. Responsibilities: Develop data pipelines using Python, Pandas, and SQL Build and deploy machine learning models with PyTorch Create LLM and workflow integrations using LangChain Consolidate and prepare datasets for analysis and modelling Provide clear, actionable insights to technical and non-technical stakeholders Must of worked within a Banking, Financial ...

Founding AI Engineer

Hiring Organisation
Oliver Bernard
Location
City of London, London, United Kingdom
100k–140k Equity : 1–3% (founding-level) Hybrid working: Central London, 3 days p/week in office. Tech Stack: TypeScript, Node.js, React, Python, LangChain, OpenAI/Anthropic I’m working with a YC-backed startup that’s building the next generation of AI-native analytics . This ...

Founding AI Engineer

Hiring Organisation
Oliver Bernard
Location
London Area, United Kingdom
100k–140k Equity : 1–3% (founding-level) Hybrid working: Central London, 3 days p/week in office. Tech Stack: TypeScript, Node.js, React, Python, LangChain, OpenAI/Anthropic I’m working with a YC-backed startup that’s building the next generation of AI-native analytics . This ...

Senior Full Stack Engineer

Hiring Organisation
Oliver Bernard
Location
London Area, United Kingdom
+ Equity 🏙️ Location: London hybrid (2 days p/week in office) 💻 Tech Stack: Node, Python (Legacy), TypeScript, Next.js, React, AWS, LangChain/MCP 🤖 Frontend leaning full stack, Next.js is a must have I’m working with an early-stage startup building agentic AI tools that eliminate the invisible administrative ...

Senior Full Stack Engineer

Hiring Organisation
Oliver Bernard
Location
City of London, London, United Kingdom
+ Equity 🏙️ Location: London hybrid (2 days p/week in office) 💻 Tech Stack: Node, Python (Legacy), TypeScript, Next.js, React, AWS, LangChain/MCP 🤖 Frontend leaning full stack, Next.js is a must have I’m working with an early-stage startup building agentic AI tools that eliminate the invisible administrative ...

Agentic Developer - Building guardrails for autonomous AI

Hiring Organisation
governr
Location
London Area, United Kingdom
systems, reinforcement learning, AI safety, or agent architectures • Experience at AI labs (Anthropic, OpenAI, DeepMind) or leading AI research groups • Production experience with agents : LangChain, AutoGPT, CrewAI, or custom agent frameworks • Regulated industry background : Financial services, healthcare, or other domains with compliance requirements • Security/threat modelling expertise : Understanding ...

Agentic Developer - Building guardrails for autonomous AI

Hiring Organisation
governr
Location
City of London, London, United Kingdom
systems, reinforcement learning, AI safety, or agent architectures • Experience at AI labs (Anthropic, OpenAI, DeepMind) or leading AI research groups • Production experience with agents : LangChain, AutoGPT, CrewAI, or custom agent frameworks • Regulated industry background : Financial services, healthcare, or other domains with compliance requirements • Security/threat modelling expertise : Understanding ...

Founding Engineer (TypeScript / AI)

Hiring Organisation
Oliver Bernard
Location
City of London, London, United Kingdom
100k–140k Equity : 1–3% (founding-level) Hybrid working: Central London, 3 days p/week in office. Tech Stack: TypeScript, Node.js, React, Python, LangChain, OpenAI/Anthropic I’m working with a YC-backed startup that’s building the next generation of AI-native analytics . This ...

Solutions Architect

Hiring Organisation
JSS Search
Location
London, UK
Employment Type
Full-time
seeking a Solutions Architect with experience of Gen AI projects from any industry. They are seeking experience of Gen AI Orchestration frameworks such as Langchain, Autogen, Google ADK etc. They'd also like expertise in AI services offered by any of the cloud providers. This is for an initial ...

Solutions Architect

Hiring Organisation
JSS Search
Location
South London, UK
Employment Type
Full-time
seeking a Solutions Architect with experience of Gen AI projects from any industry. They are seeking experience of Gen AI Orchestration frameworks such as Langchain, Autogen, Google ADK etc. They'd also like expertise in AI services offered by any of the cloud providers. This is for an initial ...

Senior Software Engineer

Hiring Organisation
Tuza
Location
London, UK
Employment Type
Full-time
speed. You're curious about using AI to enhance your productivity and shape how teams build software. You've worked with agentic frameworks (LangChain, LlamaIndex) in the past. You're a bad fit if You lack genuine curiosity about the user, the product, the technology, or the problem ...

FULL STACK Engineer + Meaningful Equity

Hiring Organisation
Robert Half
Location
London, United Kingdom
Employment Type
Permanent, Work From Home
unified development experience. AWS and Terraform for scalable, version-controlled infrastructure. TurboRepo for rapid code sharing and efficient testing. AI-driven architecture using LangChain and custom orchestration for real-world solutions. What's on Offer Permanent role with a competitive salary and meaningful equity . Brand-new MacBook and full ...

Applied AI Software Engineer - London (Hybrid) - AWS Partner

Hiring Organisation
Transparent Technology
Location
London, United Kingdom
Employment Type
Permanent
with customers, liaising with senior stakeholders, and designing and building production-ready applications. You will integrate LLMs and GenAI tools using frameworks such as LangChain and LlamaIndex , while setting up MLOps environments with Docker, Terraform, AWS, and CI/CD pipelines . As a Software Engineer first , you will have … deep expertise in at least one programming language ( Python, Node.js, Java, JavaScript, TypeScript, React ) and proven experience in productionising GenAI solutions , including integrating LLMs, LangChain, OpenAI API, or Claude . This is a rare opportunity to join as one of the Founding AI Engineers , working alongside a Senior Leadership team ...